File content as of revision 0:34f3e0f37c55:

#include "NixieTube.h"
/* Not Currently Implmented 
#define TUBE_1_LED 0x00800 
#define TUBE_2_LED 0x01000
#define TUBE_3_LED 0x02000
#define TUBE_4_LED 0x04000
#define TUBE_5_LED 0x08000
#define TUBE_6_LED 0x10000
*/
#define TUBE_1_CATH 0x20000
#define TUBE_2_CATH 0x40000
#define TUBE_3_CATH 0x80000
#define TUBE_4_CATH 0x100000
#define TUBE_5_CATH 0x200000
#define TUBE_6_CATH 0x400000
#define START_THREAD 1
Mutex nixie_mutex;

NixieTube::NixieTube(PinName sdi, PinName scl, PinName rcl, PinName cen): _thread(&NixieTube::threadStarter, this, osPriorityNormal,1024),_sdi(sdi), _scl(scl), _rcl(rcl), _cen(cen){
        digit1 = 1;
        digit2 = 2;
        digit3 = 3;
        digit4 = 4;
        delay1 = 0.0005;
        delay2 = 0.0045;
        brightness = 0;
        _cen.write(1.0);
        _cen.period_us(10000);
        _thread.signal_set(START_THREAD);  
}

void NixieTube::threadStarter(void const *p) {
  NixieTube *instance = (NixieTube*)p;
  instance->threadWorker();
}

void NixieTube::threadWorker() {
  _thread.signal_wait(START_THREAD);
  while(1) {
    nixie_thread(); 
   }
}        

NixieTube::~NixieTube()
{
}

int NixieTube::nixie_id_convert(int digit) {
    if (digit == 0 || digit == -1) {
        return digit + 1;  
    }
    if (digit < 10) {
        return 11 - digit;
    }
    if (digit == 10) {
        return 11;
    }
    return 0;
}
 
void NixieTube::send_nixie_shiftreg(int cathode_id, int led_bitfield, int tube_bitfield) {
 
    int buffer = 0;
    buffer = 1 << (cathode_id-1) | led_bitfield | tube_bitfield;
 
    for (int i=23; i >= 0; i--) {
        _sdi = buffer & (1 << i);
        _scl = 1;
        _scl = 0; // Whats going on here?
    }
    _rcl = 1;
    _rcl = 0; // Whats going on here?
 
}

void NixieTube::nixie_thread() {
    while (1) {
        nixie_mutex.lock();
        send_nixie_shiftreg(nixie_id_convert(digit1), 0, TUBE_1_CATH);
        Thread::wait(1);
        send_nixie_shiftreg(0, 0, 0);
        Thread::wait(1);
        send_nixie_shiftreg(nixie_id_convert(digit2), 0, TUBE_2_CATH);
        Thread::wait(1);
        send_nixie_shiftreg(0, 0, 0);
        Thread::wait(1);
        send_nixie_shiftreg(nixie_id_convert(digit3), 0, TUBE_3_CATH);
        Thread::wait(1);
        send_nixie_shiftreg(0, 0, 0);
        Thread::wait(1);
        send_nixie_shiftreg(nixie_id_convert(digit4), 0, TUBE_4_CATH);
        Thread::wait(1);
        send_nixie_shiftreg(0, 0, 0);
        Thread::wait(1);
        nixie_mutex.unlock();
    }
}
void NixieTube::start_nixie(){
    //thread = new Thread(nixie_thread, this);
    }
void NixieTube::update_nixie_tube(int ref,int val){
    switch(ref){
    case(1):
    digit1 = val;
    case(2):
    digit2 = val;
    case(3):
    digit3 = val;
    case(4):
    digit4 = val;
    } 
}
void NixieTube::set_dim(float duty,int pulsewidth){
    _cen.write(duty);
    _cen.period_us(pulsewidth);
}